Are Democrats on track to nominate the wrong candidate? Hillary Clinton has now fallen behind Donald Trump in a head-to-head matchup, while Vermont Senator Bernie Sanders edges out the presumptive Republican presidential nominee.

A new Rasmussen Reports national telephone and online survey of Likely U.S. Voters finds Sanders picking up 45% of the vote to Trump’s 41%. Eight percent (8%) prefer some other candidate, while five percent (5%) are undecided. (To see survey question wording, click here.)

Republicans prefer Trump to Sanders 75% to 16%, while Democrats opt for Sanders 74% to 13%. But Sanders leads Trump 44% to 38% among voters not affiliated with either major party. Against Clinton, Trump is ahead 41% to 28% among unaffiliated voters. While 31% of these voters either prefer some other candidate or are undecided in a Clinton-Trump matchup, only 18% feel that way in a Sanders-Trump race.

The survey of 1,000 Likely Voters was conducted on May 17-18, 2016 by Rasmussen Reports. The margin of sampling error is +/- 3 percentage points with a 95% level of confidence. Field work for all Rasmussen Reports surveys is conducted by Pulse Opinion Research, LLC. See methodology.

Voters under 40, a key demographic for the Sanders campaign, prefer him to Trump by a better than two-to-one margin - 61% to 28%. Trump leads among older voters.

White voters give Trump a 47% to 40% lead over the longtime senator. Black voters prefer Sanders 67% to 15%, while other minority voters give the edge to Sanders 52% to 34%.

Eighty-five percent (85%) of voters who support Clinton against Trump also back Sanders, while 91% who prefer Trump to Clinton also prefer him against Sanders. Among voters who prefer some other candidate in a Trump-Clinton matchup, just three percent (3%) support Trump; 65% back Sanders, and 30% still want some one else.

Sanders’ unexpected success in the 2016 presidential campaign has exposed the growing rift between the Democratic party establishment and the party’s more progressive wing. Still, Democratic voters are more likely than voters in general to think their party should identify with Clinton rather than Sanders.

Chaos erupted last weekend at the Nevada state Democratic convention when Sanders supporters lashed out at party leaders for what they saw as a rigged primary election. The national Democratic party has told Sanders to tone down his rhetoric and control his supporters. Sanders, while condemning any violence committed by his supporters, is refusing to end his attacks on Clinton and the party. Rasmussen Reports is surveying voters now about the incident in question and where the Democratic party will go from here. We will release those numbers next week.

The survey of 1,000 Likely Voters was conducted on May 17-18, 2016 by Rasmussen Reports. The margin of sampling error is +/- 3 percentage points with a 95% level of confidence. Field work for all Rasmussen Reports surveys is conducted by Pulse Opinion Research, LLC. See methodology.

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